Light coupling, Physics

Light coupling:

Another way to look at light guiding in a fibre is to measure the fibre's acceptance angle. This angle is the angle within which the light should enter the fibre optic to ensure it is guided through it. The acceptance angle is normally measured as a numerical aperture (NA).

The numerical aperture and acceptance angle measurements are a critical concern in practical fibre optics. Getting light into a fibre is known as "Coupling".

When fibre optics were first developed in the 1950s, no one believed that much light could be coupled into a single fibre. Instead they grouped fibres into bundles to collect a reasonable amount of light. Only when "LASERS" made highly directional beams possible did researchers seriously begin to consider using single optical fibres.

Figure shows light coupling into a fibre optic and the construction of a fibre optic cable.

1083_light coupling.png

Posted Date: 9/13/2012 8:46:27 AM | Location : United States







Related Discussions:- Light coupling, Assignment Help, Ask Question on Light coupling, Get Answer, Expert's Help, Light coupling Discussions

Write discussion on Light coupling
Your posts are moderated
Related Questions
Figure denotes a rod whose ends are in thermal contact with a hot reservoir at temperature T1 and a cold reservoir at temperature T2.  The ends of the rod are covered with insulati


quality standards and expectations for bathymetric survey

Phase (Φ) : The amount which express at any instant, the displacement of the particle and it's direction of motion is known as the phase of the particle. If two elements of the

lux; lx: The derived SI unit of illuminance equivalent to the illuminance generated by a luminous flux of 1 lm distributed consistently over an area of 1 m 2 ; therefore it ha

For a blackbody, the frequency at which maximum energy is emitted is 3 x 10 13 Hz:   A.  Give a wavenumber for the wavelength of the infrared emission? B.  What is the tempe

It describes that the total energy (pressure energy, potential energy and kinetic energy) of an incompressible and non-viscous fluid in steady flow by a pipe remains constant throu

mechanical wave

A constant force of 10N is applied perpendicular to rod placed on 2 parallel rails .If the rod is having a resistance 10ohm but rails have zero resistance then maximum speed of rod

Q. What is Fresnel diffraction? a) The source as well as the screen are at finite distances from the obstacle producing diffraction. b) The wave front suffer diffraction is